The Bieszczady Mts – a mountain range in SE Poland is a hot spot of fungal richness and diversity in Poland. This paper summarizes 5 years of studies in the Bieszczady Mts, as well as previously published research. A total of 1377 macromycetes taxa were found, including many (464) which were protected, red-listed, or very rare in Poland. Thirty-eight taxa (9 Ascomycota and 29 Basidiomycota) have been reported in Poland for the first time: Agrocybe gibberosa , Auriporia aurulenta , Bolbitius variicolor, Bulgariella pulla , Chaetosphaerella phaeostroma , Clitocybe subspadicea , Clitopilus passeckerianus , Cortinarius anomalus var. subcaligatus , C. fervidus , C. flexipes var. inolens , C. sylvae-norvegicae , Cudoniella tenuispora , Entoloma bisporigerum , E. olorinum , E. poliopus var. parvisporigerum , E. sericeoides , Galerina caulocystidiata , Gymnopilus josserandii , Hymenoscyphus subferrugineus , Hypholoma olivaceotinctum , Inocybe queletii , Laccaria altaica , Lactarius romagnesii , L. rostratus , Mycena epipterygia var. atroviscosa , M. epipterygia var. candida , M. polygramma f. candida , Octavianina lutea , O. mutabilis , Pachyella violaceonigra , Panaeolus papilionaceus var. capitatocystis , Phaeocollybia jennyae , Psathyrella almerensis , Pyrenopeziza inornata , Scutellinia torrentis , Tricholoma basirubens , Tricholomopsis flammula , Vibrissea decolorans . For all new taxa, short descriptions based on the collected material have been provided.